Endpiece for stringers of separable fasteners



Obt. 8, 1 Av SUSSKIND 2,217,571

ENDPIECE FOR STRINGEBS 0F SEFARABLE FASTENERS F iled Oct. 15, 1937 2Sheets-Sheet 1 .l'nvenfor':

Oct. 8, 1940. v A. SUSSKIND 2,217,571

ENDPIECE FOR STRINGERS 0F SEPARABLE FASTENERS Filed Oct. 15, 1957 2Sheets-Sheet 2 Flyzz 1 h- {sa y 58 1 W65 My. 77

the Strin er. y he teeth Projections Whi h and 4 of which are in mutualengagement, when 45 50 tion e illustrated y y of example in the acofbridges or noses engage the fastening elements 50 Patented Oct. 8, 1940i UNITED STATES PATENT OFFICE D ENDPI ECE FOR STRINGERS OF SEPARABLEFASTENERS Albert Siisskind, Berlin, Germany Application October 15,1937, Serial No. 169,297 In Germany October 24, 1935 8 Claims. (Cl.24-205) The present invention relates to endpieces for Fig. 2 is adeveloped plan view of the end piece stringers of separable fastenersand particularly or top stop shown on the left side of Fig. 1, forstringers of that kind which is cut-01f in any Fig. 3 is a developedplan view of a modification desired length from endless bands carryingof the top stop shown in Fig. 2, is mutually engaging rows of fastenerelements. Fig. 3a is a perspective view of the form shown The end orlimiting pieces hitherto used in in Fig.3, 4 connection with fastenerstringers of the last Fig. 4 is a developed plan view of the end piecenamed kind'are usually attached to the stringor bottom stop shown inFig. 1, ers by means of teeth, which when the end pieces Fig. 5 is adeveloped plan view of an end piece of substantially U-shapedcross-section are or top stop of the type shown at the right of clampedtogether will pentrate the material of Fig. 1, 1 the stringers. Theseend pieces have the draw- Fig. 6 is a vertical sectional view of the topback that they are not rigidly connected with stop shown in Fig. 5 on aslightly larger scale, the fastener elements on the stringers, so thatFigs. 7 and 8 show a developed plan and side 5 they by carelessfastening may loosen from the elevation of still another embodiment ofan end latter. The known end pieces also have the piece for the openedend of a fastener strip-or a drawback that a special toolmust use usedfor top stop, bending the same into their position of use. Fig. 9 is aperspective view of a modified form The main object of the presentinvention is to of bottom stop or an end piece for application do awaywith the said disadvantages and procure to a closed end of a fastener, 5an end piece which can be positively intercon- Fig. 10 is a developedplan of a further modified nected with the fastener elements proper andbe form of bottom stop, fixed to the stringers without the aid of atool. Fig. 11 is a perspective view of a form of end The presentinvention therefore renders it pospiece adapted for use solely onfastener strips of sible to deliver interconnected fastener strips ofthe type which do not require the use of fastener 25 great length to theconsumers, and leave it to end sections, them to divide the strips as itmay be required, Fig. 12 is an elevatlonal view of a still further andto finish the fastener pushing the fastener modified form of end pieceor top stop, slide over the rows of fastener elements and by Fig. 13 isan elevational view of a further modiapplying the limiting or end pieceswithout the fled form of end piece,

use of any tool- Fig. 14 is a developed plan of a still further Thelimiting or end pieces according to the inmodified form of end piece,vention, which are pushed upon the severed ends Fig. 15 is anelevational view of the form of of the interconnected fastener stripscarrying the end piece shown in Fig. 14,

5 fastening elements are in contrast to the known Fig. 16 is anelevational view of the form shown limiting or end pieces equipped withteeth or lugs, in Fig. 15 applied to the fastener element, and which,when the sleeve-shaped limiting or end Fig. 17 is an elevatlonal view ofa still further pieces is applied, resiliently and self-locking willmodification showing the top pieces cooperating snap into the spacesbetween the fastening elewith the slider of the fastener when theholding ments on the stringers. The open side of asleeveparts of the toppieces-are angularly arranged 4 shaped end piece is simply pushed overthe sevto secure the stringer ends. ered end of the stringer in questionand the end In Fig. 1, which shows a partially open fastener piece isthus not connected with the stringer itself strip ith t nd and 2 denoteth fastener t is nly coupled to he fastening elements on stringers, theconventional fastening elements 3 en age the spac s intermediate t as eg elea length is severed from a, moving fastener band. ments on thestringer. The free outer ends of the stringers l and 2 carry someembodiments of separable fastener strips end pieces 5 and 6,respectively, which limit the and limi in r d Pieces r ng to einvenstrokes of the fastener slide, and which by means companyingdrawings. (Figs. 1 and 2). To the ends of the members 5 Fig. 1 is afront elevational view of a partly and 6 remote from the fastenerstringers I and 2, opened fastener strip, with the fastener slide outerstringers 1 and 8, respectively, without showing two forms of outer endpieces or top fastening elements, are connected. The connecstops and aninner end piece or bottom stop, tion is formed by projections, teeth orthe like on 55 the pieces 5 and 8, which penetrate the material of theouter stringers I and 8.

At the closed inner end of the fastener strip a limiting or end piece 9common for both stringers is arranged, which, after it has been pushedover the conventional fastening elements 3 and 4, with its projectionsor fingers engage the spaces intermediate the fastening members, andhereby is self-lockingly connected with the inner stringer ends Ill,II), which carry no fastening elements.

Fig. 2 shows the form of the end piece 5, also shown in Fig. 1, forfastening elements of the so-called T-type. This end piece has twoopenings H, Il',.the walls II" and Il' engage the necks of the T-shapedfastening elements. The end piece 5 is bent into U-shape about thedashed lines |2,l2'. The one end of the end piece 5 is formed withprojections 13, I8, which are rightangularly bent and serve forconnecting the end piece with the outer stringers 1 shown in Fig. 1.When the end piece is bent into U-shape, it is closed by the teeth Hengaging correspondingly formed cavities I! in the opposite edge of theend piece. a

Fig. 3 shows another form of an end piece for the open end of a fastenerstrip. The end piece is bent into U-shape about the lines l6, l8.Projections l1 and I1, which after the folding are right-angularly bent,serves as guides along the fastening elements. Other guides are formedby the members l8 and i8, which before use also are right-angularlybent. After the end piece has been pushed over the rows of fasteningelements, the projecting parts l9 and Is at the upper end of the piecewill engage the space intermediate two fastening elements, whereby thepiece is securely held in position.

For the attachment of the stringer sections l0, Ill, which do not carryany fastening elements, the end piece may at its lower end be formedwith points or teeth 2| adapted, after having been right-angularly, topenetrate the material of the stringers. After the bending, the endpiece may for instance be held together by means of lateral teeth 22,adapted to engage recesses 23 in the opposite side of the end piece.Instead of this arrangement a rivet may be used, which after the bendingis inserted through the holes 24 and 24'.

Fig. 4 shows an end piece for the closed end of the fastener stripsimilar to the end piece 9 shown in Fig. 1. This end piece consists oftwo plates 28 and 26', which are interconnected by means of a bridge 25,and are bent into U-shape about this bridge. Deformation of the foldedend piece may be avoided by means of projections 21, adapted to engagerecesses 28. Adjacent the bridge teeth 29 and 29' are formed, whichserve for the attachment of the end piece to the stringer ends which donot carry fastening elements. For the same purpose also lateral teeth 30and 30 may be used, which before use are bent right-angularly to theplates 26, 28'. After the folding of the end piece the projectingtongues 8|, 3| and 25', respectively, are bent rectangularly to the saidplates, and when the end piece is pushed over the rows of fasteningelements, these, tongues will engage the spaces between the fasteningelements, on the outer sides of the rows, whereby the end piece issecurely held in position.

The end piece shown in the Figs. 5 and 6 is before use folded intoU-shape about the lines 33 and 33'. The end piece is formed with tonguesll, -34, stamped out in the sides of the piece.

32, 32' on the plates 26 and and at the ends of these tongues hooks 35and 35' are formed, which, when the end piece is pushed over the rows offastening elements, will snap into the spaces intermediate the fasteningelements.

The Figs. 7 and 8 show an end piece adapted for use at the open end of afastener strip. As shown in Fig. 'I this end piece has lateral arms 36and 38' with inwardly projecting, hook-shaped ends 31 and 81, and anintermediate arm 38 which, as indicated in Fig. 8, has an inwardly anddownwardly inclined tongue 38'. When the end piece is applied to afastener strip, the tongue 38' will snap into the hole of a fasteningelement 38 and the hooks 31 will engage the spaces intermediate thefastener elements.

An end piece, resembling that shown in the Figs. 5 and 6, but designedfor use at the closed end of a fastener strip, is shown in Fig. 9. Thisend piece is formed with tongues 40 and 40', the ends of which arehook-shaped and adapted to engage the two rows of fastening elements.

Fig. 10 shows an end piece for the closed end of a fastener strip,resembling that shown in Figs. '1 and 8 for the open end of a fastenerstrip. This end piece consists of two plates 42, 42, which 'areinterconnected by means of a bridge 4| and before use are bent about theedges of this bridge.

The plates 42, 42' have arms 43, 43 and 44, 44', respectively, the endsof which are hook-shaped and adapted, when the folded end piece isapplied to the closed end of a fastener strip, to engage the spacesbetween the fastening elements and lock the end piece to the latter.

Fig. 11 is a perspective view, showing an end piece for the closed endof a fastener strip which has no stringer end sections without fasteningstrips (shown at Ill, ill in Fig. 1). The plateshaped parts 45, 45' ofthis end piece, which are interconnected through the bridge 48 aboutwhich they are bent, and at their front ends have lips- 48, 46' and 41,41' adapted to engage the spaces intermediate the fastening elements,terminate at the bridge 48 and have thus no projections or the like forattachment to stringer end sections not carrying fastening elements.

Fig. 12 shows schematically an end piece for ithe closed end of afastener strip. To this end piece the inclinedly cut-off stringer endsections 50 and 50' without fastening elements are attached. Along thelines 5| and 5| these end sections are coated with an adhesive layer, inorder to facilitate the connection with the main stringer sectionscarrying the fastening elements. The last named stringer sections herebyoverlap the adhesive-coated ends of the sections ill and 50.

- From Fig. 12 it can be seen, how far the fastener slide 52 will slideover the end piece before it is arrested.

The end piece 53 shown in Fig. 13 is designed for use at the closed endof a fastener strip which has no stringer sections without fasteningelements. This end piece has two inwardly yielding tongues 54 and 55,which, when the end piece is applied, will engage spaces intermediatethe fastening elements and automatically lock the end piece 53 in theproper position. The bridge member of this end piece is formed withlateral projections 56 and 56', which at their edges are formed withrows of teeth 51 and 51' or the like and surround the severed ends ofthe stringers without fastening strip whereby fringing of the stringerends is prevented.

The endpiece for the end of the fastener strip shown in Figs. 14, 15 and16, which also has U- shaped edges 58 and 58', is formed with a rigidnose 59. The stringer end section 6|! without fastening strips is fixedto the endpiece'by means .The parts 63, 63', of the endpieces locatedonthe fastening elements form an angle with the parts 64, 64' of thesame to which the stringer sections 54 and 64' are attached which carryno fastening elements. Due tothis arrangement, the parts 63, 63' willwithout difiiculty slide into the fastener slide, which is indicated indot-and-dash- Y lines at 65, and when the strip is closed, the parts 64,64 carrying the stringer ends to which no fastening elements are fixed,will not, as otherwise, point outward away from each other, but will lieadjacent each other in parallel relation. This gives a fastener of goodappearance, which closes perfectly.

Instead of this arrangement the stringer sections 84 and 64' may bepivoted to the endpieces 63 and 63', so that they easily may be broughtinto the proper position when the structure is closed. The fastenerelements carrying stringers may be marked with arrows or the likeaccording to Fig. 1, for the purpose to show the direction in which theslide must be moved over the stringers, and on which end thecorresponding endpieces must be applied.

I Iclaim:

1. An endpiece for stringers of slide actuated fasteners, whichstringers have each a continuous straight row of spaced fasteningelements,

said endpiece consisting of walls connected by an apex soas to give tosaid endpiece a U-shaped profile, and being adapted to be pushed alongsaid row to a position overlapping the outermost fastening elements ofsaid row, said endpiece being provided, with at least one anchoringmember inclining. inwardly toward said fastening elements, said memberpresenting a pawl-like tooth having a gently inclined cam face, adaptedto slip over said fastening elements, and a sharply inclined lockingface, adapted to engage firmly said fastening elements for locking theendpiece against longitudinal movement in one direction along saidfastening elements. I

2. An endpiece as in claim 1, in which said tooth is formed by the endof an elastic tongue connected with said end piece.-

3. An endpiece as in claim 1, which consists of elastic material, and inwhich said tooth is formed by the end of a tongue, integral with saidendpiece.

4. An endpiece as in claim 1, in which at least one wall of the U isprovided with two tongues, each having an anchoring tooth, the sharplyinclined end faces of said tongues-being ofiset longitudinally relativeto each other.

5. An endpiece as in claim 1, which consists of elastic material, and inwhich each wall of the U is integral with a tongue provided with saidtooth, the teeth of said tongues facing each other.

6. An endpiece as in claim 1, in which said tooth is provided at theapex of the U.

7. An endpiece as in claim 1, in which the apex of the U and at leastone of the walls of the U are each provided with an anchoring tooth.

8. An endpiece as in claim 1, in which each wall of the U is providedwith two anchoring tongues facing each other, the sharply inclined endfaces of said tongues being offset longitudinally relative to eachother.

ALBERT'S'USSKDID.

